aid
attack
boy
cardiac conduction
cardiac massage
cardiac resuscitation
cardiopulmonary
chest
chest wall
classes
clinic
cpr
death
demonstrating
demonstration
doctor
dummy
emergency
emergency equipment
emergency services
first aid
health
healthcare and medicine
healthcare worker
heart
heart attack
help
hospital
human hand
illness
instructions
instructor
intensive care
life
lifesaver
male
massage
massaging
medical equipment
medical occupation
medical procedure
medicine
patient
reanimation
resuscitation demonstration
shock
surgery
system
urgency